AirHint found the following cheapest one-way flights from Boston (BOS) to San Juan (SJU) in April 2026 (see full year).
One-Way flights
| 27 Apr | Delta | direct | |
| 26 Apr | Delta | ||
| 22 Apr | United | ||
| 26 Apr | Delta | direct | |
| 19 Apr | United | ||
| 18 Apr | United | ||
| 17 Apr | Southwest Airlines | ||
| 19 Apr | Delta | direct | |
| 18 Apr | Delta | direct |
Also check the deals for return flights from Boston to San Juan in April.
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